Patents by Inventor Munetaka Yoshimura

Munetaka Yoshimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Voltage regulator and method of testing the same
    Patent number: 10915126
    Abstract: A voltage regulator includes an output voltage terminal which supplies an output voltage having a preset value, a voltage adjustment terminal which detects the output voltage, an error amplifier which compares the output voltage and a reference voltage to control the output voltage, a phase compensation capacitor, a test circuit which switches a normal mode with a test mode to test the phase compensation capacitor, a switch which makes the phase compensation capacitor valid or invalid, and a constant current source which makes a bias current of the error amplifier in the test mode lower than that in the normal mode.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: February 9, 2021
    Assignee: ABLIC INC.
    Inventors: Kaoru Sakaguchi, Yasuhiko Ogura, Munetaka Yoshimura, Hiroki Takahashi
  • VOLTAGE REGULATOR AND METHOD OF TESTING THE SAME
    Publication number: 20200073424
    Abstract: A voltage regulator includes an output voltage terminal which supplies an output voltage having a preset value, a voltage adjustment terminal which detects the output voltage, an error amplifier which compares the output voltage and a reference voltage to control the output voltage, a phase compensation capacitor, a test circuit which switches a normal mode with a test mode to test the phase compensation capacitor, a switch which makes the phase compensation capacitor valid or invalid, and a constant current source which makes a bias current of the error amplifier in the test mode lower than that in the normal mode.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 5, 2020
    Inventors: Kaoru Sakaguchi, Yasuhiko Ogura, Munetaka Yoshimura, Hiroki Takahashi